Electric switch.



A. F. WALLBILL'IGH.

ELECTRIC SWITCH.

APPLICATION rum) AUG.18, 1911.

Patented Sept. 17, 1912'.

In ventor:

a w u 1, m m L A W v w M Amv ANTHONY I. WALLBILLICH, 0F BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE PER- KENS ELECTRIC SWITCH MANUFACTURING COMPANY, OF BRIDGEPORT, CONNECTI- CUT, A CORPORATION OF CONNECTICUT. I

ELECTRIC swrrc'n.

,csa.

Specification of Letters Patent. P atentigd Sept. 17,1912,

Application filed August 18, 1911. Serial No. 644,824.

an eiiicient escapement mechanlsm of sim-' ple construction.

In the accompanying drawings, Figure 1 is a vertical section through a switch in which my invention is embodied in one form; Fig. 2 is a perspective of the escapement elements detached.

The switch illustrated is of usual type having an insulating base 5 carrying com-' bined wire and switch terminals 6. The switch blades 7 are carried by a yoke 8 rotating freely on the spindle 9 and subjected to the action of the coil spring 10, one end of which engages the lug 11 on the yoke while the other end engages in one o'fthe notches 13 of the collar 12, fast on the spindle The snap make and break of the switch is obtained through an escapemeut mecha nism coiiperating with the slotted lug 15 of the yoke. lhis escapement mechanism conmrises an eccentric 1G with detent shoulder 17 which engages successively the stop lugs"18 punched up from the rectan 1- lar plate 19 which is held against rotation in a rectangular recess in the base pin 20 projecting from the upper face of the eccentric 16, slides in the slot 21 of the yoke lug 15 and insures the simultaneous rotation of the eccentric and yoke.

The cam :22, fast on the switch spindle 9, works in the bearing aperture 28 of the eccentric 16. Upon the rotation of the spindle 9 through the but-ton 24 fast thereon,

the cam 22 rotating in the bearing aperture .23 of the eccentric 16, slides the latter across he stop plate 19 thus drawing its shoulder ll out of engagement with the stop lug 18 engaged thereby. During the 1"otation of the spindle 9, which effects this disengagement of the the eccentric from the stop lug, the actuating spring 10 has been brought under tension by reason of the fact that its lower end is held sta- .-tionary by the yoke 8 while its upper end is' carried around with the collar 12,011 the Spindle. Consequently the moment the shoulder 17 of the eccentric clears the stop lug 18 the eccentric being in engagement with the yoke through the sliding pin and slot connection 202l, is suddenly rotated with the yoke by the spring 10. As the yoke rotates on the cam 22, a horizontal sliding motion'is simultaneously imparted thereto, and the shoulder 17 is moved outward so that it engages the next stop lug- 18 and is suddenly halted thereby, together with the switch yoke, in the make or break position of the switch.

l I claim as my invention:

1. A switch mechanism forrotary snap switches, comprising a switch spindle, a pair of switch blades, a yoke freely jo'urnaled on said spindle and carrying the switch blades, a shouldered eccentric in sliding en.- gagemcnt but rotarily movable with said yoke, a. series of stop lugs co ip'crating with the shoulder of said eccentric, and a cam for operating said eccentric.

F3. A. switch mechanism for rotary snap switches, comprising a switcl'i spindle, a pair of switch bhides. a yoke freely journalcd on. said spil'idle and carrying the switch blades, an eccentric in sliding engagement but rotarily movable with said yoke, a peripheral shoulder on said eccentric, a series of stop lugs cooperating with said pcripheral shoulder and a cam for operating said eccentric.

3. A switch mechanism for rotary snap switches, comprising stop plate with punched up stop lugs projecting from its upper face, an eccentric with peripheral shoulder coiiperating with-said stop lugs and a pin projecting from the upper face of said eccentric, a slotted yoke moving with the switch blades and in sliding engagement with said pin, in combinationwith a cam for operating said eccentric.

4-. A-switch mechanisnr for rotary snap switches comprising a switch spindle,' a yoke freely journaled thereon, contacts carried by said yoke, a radially'slotted lug on said yoke, a cam fast with the switch spindle, a yoke with bearing'apcrture journaled on said cam and provided with a' .punched up pin engaging. in the radial slot of the yoke, and a peripheral shoulder, in combination withla stop plate with punched up lugs engaging said peripheral shoulder on the eccentric, substantially as described.

5. A switch member for rotary snap switches,-comprising a switch spindle, acam thereon, an eccentric with peripheral shoul der and struck-up lug jo irnaled on said cam,

and a contact carrying yoke having a slotted lug in the slot of which said struck-up lug engages, together with a'series of stationery stop lugs adapted to be serially engaged by said peripheral shoulder on the eccentric, substantially asdescribed.

In testimony whereof I have signed my '15 name to this specification, iii the presence of two subscribing Witnesses.

ANTHONY F. YVALLBILLI CH. Witnesses I G. W. Goomzmcs, R. M. Burns. 

